GRIB2 - TABLE 4.2-1-0

PARAMETERS FOR DISCIPLINE 1
CATEGORY 0

(Hydrological products, Basic Hydrology category)

In Section 0, Octet 7 = 1
In Section 4, Octet 10 = 0

Revised 07/01/2014
Red text depicts changes made since 06/27/2008



Number
(In Section 4, octet 11)
Parameter Units
Abbrev
0
Flash Flood Guidance (Encoded as an accumulation over a floating subinterval of time between the reference time and valid time)
kg m-2
FFLDG
1
Flash Flood Runoff (Encoded as an accumulation over a floating subinterval of time)
kg m-2 FFLDRO
2
Remotely Sensed Snow Cover
See Table 4.215
RSSC
3
Elevation of Snow Covered Terrain
See Table 4.216 ESCT
4
Snow Water Equivalent Percent of Normal
%
SWEPON
5
Baseflow-Groundwater Runoff kg m-2 BGRUN
6 Storm Surface Runoff kg m-2 SSRUN
7 Discharge from Rivers or Streams m3 s-1 DISRS
8-191
Reserved

192-254
Reserved for Local Use


192
Baseflow-Groundwater Runoff kg m-2 BGRUN
193
Storm Surface Runoff kg m-2 SSRUN
255
Missing



Notes:

(1) Remotely sensed snow cover is expressed as a field of dimensionless, thematic values. The currently accepted values are for no-snow/no-cloud, 50, for clouds, 100, and for snow, 250. See code table 4.215.

(2) A data field representing snow coverage by elevation protrays at which elevations there is a snow pack. The elevation values typically range from 0 to 90 in 100m increments. A value of 253 is used to represent a no-snow/no-cloud data point. A value of 254 is used to represent a data point at which snow elevation could not be estimated because of clouds obscuring the remote sensor (when using aircraft or satellite measurements).

(3) Snow water equivalent percent of normal is stored in percent of normal units. For example, a value of 110 indicates 110 percent of the normal snow water equivalent for a given depth of snow.

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